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3 years ago

A star produces energy by:

Chemistry

1 answer:

frosja888 [35]3 years ago

3 0

Answer : C

Explanation:

a star produces energy by combining two atoms into one creates a powerful burst of energy

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Given the values for C (2.5) and O (3.5), calculate the electronegativity difference in a carbon monoxide bond, CO

34kurt

Answer:

ΔEN CO = 1.0

Explanation:

To calculate the electronegativity difference, we have to substract the element which has the highest EN to the other, that has a low value.

For this case EN from O - EN from C

Electronegativity is a property of the periodic table that increases diagonally, where Fr and Rb are the elements of less EN while F is the most electronegative element, with a value of 4. This is because F is an element with a high ionization energy and a negative electronic affinity.

ΔEN CO = 3.5 - 2.5 = 1.0

Electronegativity (EN) describes the ability of an atom to compete for

electrons with other atoms to which it is attached.

7 0

4 years ago

By paying low wages, factory owners were able to

sweet [91]

To make more profit and make their business/company’s lager this also means that the customers that buy products have more variety of choices

5 0

4 years ago

how does the total mass of each object increases the amount of force that is needed to get them moving at 5 m/s increase by abou

irakobra [83]

Answer:

The answer is below

Explanation:

Newton's second law of motion states that the force applied to an object is directly proportional to the rate of change of momentum with respect to time, going in the same direction as the force.

Let F = force, m = mass of object, v = velocity of object, mv = momentum.

F = d/dt(mv) = m(dv / dt) = ma; a = acceleration.

Let us assume that the object starts from rest to 5 m/s within 1 seconds, hence:

F = m(dv / dt)

200 N = m[(5 m/s - 0 m/s) / (1 s)]

200 = 5m

m = 40 kg

7 0

3 years ago

In another universe the electrons are described by four quantum numbers p, q, r, and s. The rules for these quantum numbers are

andreyandreev [35.5K]

do u know how to start it and also define it

4 0

3 years ago

A sample of ammonia is found to occupy 0.250 L under laboratory conditions of 27 °C and 0.850 atm. Find the volume of this sampl

Rzqust [24]

Answer:

0.193 L

Explanation:

Step 1:

Data obtained from the question.

Initial Volume (V1) = 0.250 L

Initial temperature (T1) = 27°C

Initial pressure (P1) = 0.850 atm

Final volume (V2) =?

Final temperature (T2) = 0°C

Final pressure (P2) = 1.00 atm

Step 2:

Conversion of celsius temperature to Kelvin temperature.

Temperature (Kelvin) = temperature (celsius) + 273

Initial temperature (T1) = 27°C = 27°C + 273 = 300K

Final temperature (T2) = 0°C = 0°C + 273 = 273K

Step 3:

Determination of the new volume of the sample of ammonia gas.

The new volume can be obtain by using the general gas equation as shown below:

P1V1/T1 = P2V2/T2

0.850x0.250/300 = 1xV2/273

Cross multiply to express in linear form

300 x V2 = 0.850x0.250x273

Divide both side by 300

V2 = (0.850x0.250x273) /300

V2 = 0.193 L

Therefore, the volume of the sample at 0 °C and 1.00 atm is 0.193 L

6 0

3 years ago